Perhaps slightly off-topic (other than being a resonably old part), but
would anyone around here have a datasheet (or, at least, a pin-out) for an
HP HDSP-2490? This is an odd, 4-digit, 5x7 led matrix display. It's in a
28-pin dip, and looks to have some intellegence built in.
The answer from HP (nee Agilent) is "long since obsolete, we know nothing".
Thanks...
Ken